To provide an electronic blood pressure gauge (1) which detects the pressure within the cuff (2) at the time the amplitude of the volumetric variation of the artery of the examined person becoming maximum, by overlapping high frequency vibration and detecting the volume of the artery of the examined person, during a process of ascending the pressure applied on the cuff (2) or during a process of descending the pressure after firstly ascending said pressure over the highest blood pressure. Then, the electronic blood pressure gauge (1) controls the pressure applied within the cuff (2) such that the volume of the artery of the examined person becomes constant. Finally, the blood pressure of the examined person can be determined by the increase or decrease value of the applied pressure.電子血壓計(1),在使施加於腕帶(2)之壓力上昇的期間中,亦或,在使該壓力上昇超過其受測者之最高血壓以上之後再下降的期間中,藉由一面使高頻之振動重疊一面檢測受測者之動脈的容積,而檢測受測者之動脈的容積變化之振幅成為最大時之腕帶(2)內之壓力。其後,電子血壓計(1)控制施加於腕帶內之壓力以使受測者之動脈的容積為一定,並由該施加壓力的增減值來測定受測者之血壓。1...電子血壓計2...腕帶3...管4...顯示部5...操作部
